Granted Patent
Utility
US 4,393,068 · App. 06/337,039
Pyridylalkyl thiocarbonates as insect repellents
Inventor:
Rayman Y. Wong
Patented Case
View Patent ↗
Granted: Jul 12, 1983
Filed: Jan 4, 1982
Inventor
Rayman Y. Wong
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.